Technical information

TROUBLESHOOTING
6-13
UGH024/1103 Portable Chillers
TIC C
ONTROL
ALARM
CONDITIONS
Alarm
Sensor Failure SF2
Possible cause
The process temperature
sensor failed
Sensor wiring is incorrect
or failed
Solution
Check with OHM meter and
see if the resistance matches
the table below. Replace if
needed.
Check all wiring from terninal
strip to sensor in question.
Repair as necessary.
°F (°C) Resistance °F (°C) Resistance
in Ohms in Ohms
-40 (-40) 613 113 (45) 1195
-31 (-35) 640 122 (50) 1237
-22 (-30) 668 131 (55) 1279
-13 (-25) 697 140 (60) 1323
-4 (-20) 727 149 (65) 1368
5 (-15) 758 158 (70) 1413
14 (-10) 789 167 (75) 1459
23 (-5) 822 176 (80) 1506
32 (0) 855 185 (85) 1554
41 (5) 889 194 (90) 1602
50 (10) 924 203 (95) 1652
59 (15) 960 212 (100) 1702
68 (20) 997 221 (105) 1753
77 (25) 1035 230 (110) 1804
86 (30) 1074 239 (115) 1856
95 (35) 1113 248 (120) 1908
104 (40) 1153 ------ ------